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    <meta charset="utf-8">
    <title>GMaps.js &mdash; Geofences</title>
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    <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
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    <link rel="stylesheet" type="text/css" href="examples.css"/>
    <script type="text/javascript">
        var map;
        $(document).ready(function () {
            map = new GMaps({
                el: '#map',
                lat: -12.043333,
                lng: -77.028333
            });
            var path = [
                [-12.040397656836609, -77.03373871559225],
                [-12.040248585302038, -77.03993927003302],
                [-12.050047116528843, -77.02448169303511],
                [-12.044804866577001, -77.02154422636042]
            ];

            polygon = map.drawPolygon({
                paths: path,
                strokeColor: '#BBD8E9',
                strokeOpacity: 1,
                strokeWeight: 3,
                fillColor: '#BBD8E9',
                fillOpacity: 0.6
            });
            map.addMarker({
                lat: -12.043333,
                lng: -77.028333,
                draggable: true,
                fences: [polygon],
                outside: function (m, f) {
                    alert('This marker has been moved outside of its fence');
                }
            });
        });
    </script>
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<h1>GMaps.js &mdash; Geofences</h1>

<div class="row">
    <div class="span11">
        <div id="map"></div>
    </div>
    <div class="span6">
        <p>You can attach a geofence (which can be a polygon or a bounds) to a marker with:</p>
      <pre>polygon = map.drawPolygon({
  paths: path,
  strokeColor: '#BBD8E9',
  strokeOpacity: 1,
  strokeWeight: 3,
  fillColor: '#BBD8E9',
  fillOpacity: 0.6
});
map.addMarker({
  lat: -12.043333,
  lng: -77.028333,
  draggable: true,
  fences: [polygon],
  outside: function(marker, fence){
    alert('This marker has been moved outside of its fence');
  }
});</pre>
        <p>You must define an <strong>outside</strong> callback, which will use this <code>marker</code> and its <code>fence</code>.
        </p>

        <p><span class="label notice">Note: </span>You also can use <code>checkMarkerGeofence</code> or <code>checkGeofence</code>
            methods.</p>
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